Air pumping or forcing mechanism.



H, HARSANT. AIR PUMPING 0R rommenmmmsm.

.APPLIOATIQN IILED .APB.18, 1908.

Patented Nov. 30, 1909.

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' AIR PUMPING OR FORGING MEGHANISM.

APPLICATION FILED API-. I8, 1908.

Patnted Nov. 30, 1909.

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NTED STATES FATFEN il;

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HORACE I-IARSANT, OF PENGE, LONDON, ENGLAND, ASSIGNOR TO ERNEST GEORGE MITCHELL, OF LONDON, ENGLAND.

AIR PUMPING OR FORCING- MECHANISIVI.

Specification of Letters Patent.

Patented Nov. 30, 1909.

To all whom t 'may concern:

Be it known that I, HORACE HARSANT, a subject of the King of Great Britain and Ireland, and residing at 2 Westbrook Villas, Moreland Road, Lennard Road, Penge, S. E., in the county of London, England, have invented certain new and useful Improvements in Air Pumping or Forcing Mechanism, of which the following is a specification.

This invention relates to improvements in air pumping or forcing mechanism forvuse in petrol lighting and has for its object the feeding and mixing of the air and petrol spirit in a simple and more economical manner than heretofore without the use of a gas or steam engine. For this purpose water from a main pressure pipe is fed by a valve to a working cylinder the piston rod of which is connected to a bell working 1n an air drum. The drum is fitted with a vertical pipe open at the bottom to the atmosphere and iitted at the top with a valve so that as the bell is raised by the piston air is drawn into the same and on lowering the bell is forced in through another pipe eX tending up into the bell, which pipe is also fitted with a valve for permitting the passage of the air to an air storage tank which is also itted with a bell weighted according to the amount of pressure of the air to be received and held therein. The air from the said tank is led by a pipe to the bottom of the carbureter through which the said pipe passes and in which is supported a seriesv of horizontal plates or disks between which is placed a packing formed of plaster,

whitening and sponge miXed together. The petrol filled into the carbureter at the top of same passes down through the packing -through opening on opposite sides of each plate so as to take a zig-zag course, thus thoroughly saturating the packing with the spirit, any surplus of the latter being carried off by a pipe at the bottom fitted with a cock. The air fed into the carbureter passes up through the packing taking a similar zigzag course thereby thoroughly mixing with and taking up the petrol, the said mixture of air and petrol escaping through a pipe at the top to the burners. To effect the automatic working of the apparatus a rotary disk valve supplying water to the engine is litted with a lever connected by a rod to a piston working in a tube fixed to the inrod, and Fig.

side of the top of the air drum, a spring being placed between the piston and the lower closed end of the tube and also between the piston and the top of the tube. A rod, fixed to the bell is provided with two beveled projections which act upon a spring catch pivoted to a frame above the bell, as the latter rises or falls, thus disengaging the catch from notches in the piston rod and permitting the latter to rise .or fall by the pressure of the springs on the piston. The piston is thus stopped for a certain time and the valve is operated automatically by the pressure of the springs acting on its rod. As the pressure of the air increases the storage bell rises and acts upon a pivoted lever which is thusv caused to close a valve and shut oif the water supply, but upon the air pressure decreasing the valve is again opened for feeding the water supply through the operating valve to the engine. And inorder to clearly understand my said invention reference is had to the accompanying sheets of drawings in which- Y Figure 1 is aside elevation of the apparatus, Fig. 2 is a plan of thecarbureter and air connections and Fig. 3 is a sectional elevation of the apparatus. Fig. 4 is a front elevation of the rotating valve, and Fig. 5 is a similar view of the back of the same. Fig. 6 is a section of the valve on the line af, Fig. 4. Fig. 7 is an elevation of a part of the spring piston rod yand disengaging 8 is a plan showing the spring catch.

a is the air drum in which is suspended the air bell o by the rod c connecting it to the piston o! working in the cylinder c carried by aplate f supported by the rods g serving as guides to the bell b. The drum a is tted with the air supply pipe It open at the bottom to the atmosphere and provided at the top with a valve it preferably formed of a cork or other loose disk, or a ball or other valve may be used.

i is the air escape pipe also extending up into the bell and leading to thevalve y' outside the drum a from whence the air escapes to' a storage tank lo; a second air drum Z and bell m may be used when an eXtra supply of petrol vapor or gas is required for feeding an increased number of burners. The bell m of this drum is also connected to the piston a of a cylinder 0 which latter is connected at the top by a pipe p tted with a cock p', to the bottom of the cylinder e, and at the bottom by a pipe g, fitted with a cock g, to the top of the cylinder e. The air drum Z is thus caused to act reversely to the air drum a so as to give a continuous supply of gas on the principle of a double acting air pump. 7" is the carbureter consisting of a chamber fitted with horizontal plates, or disks r supported by the distance pieces or feet r2 projecting from the disks and having a packing r3 placed in the space between them. This packing consists of a mixture of plaster, whitening and sponge and serves the purpose of absorbing the petrol fed into the chamberl by the opening 0A, any surplus of the spirit escaping by the pipe r1" fitted with a cock TG. `s is the air supply pipe leading from the drum L to the bottom of the air storage tank 7c, and s2 is the gas escape pipe leading from the tank /c to the carbureter 7 and the burners. is a pipe leading from the drum Z to the pipe s and fitted with a valve s.

The rotary disk valve supplying water to the engine, Figs. 4, 5 and 6, consists of a front disk formed with two holes in a horizontal line with the axis 2 of the valve and behind the disk is fitted a disk 3 of leather formed with vertical slots 1 in line with the said holes. To the back of the leather disk 3 is fixed a second metal disk 5 formed withfour holes G one at each end of the slots "1, and behind the disk 5 is fixed a leather washer 7 also formed with four holes corresponding in position to the holes 1 in the disk 5.

To the back of the washer 7 is fixed a metal ring S inside of which is fitted a metal disk 9 formed with two holes 1O corresponding in position to two opposite holes in the leather Washer 1, the disk o being fixed to the axis 252 of the valve so as to turn therewith. Behind the disk 9 is fitted another leather washer 11 also formed with four holes 12 corresponding in position to those of the leather washer 1, and to the back of this washer 11 is fixed a third metal disk 13 formed with four holes corresponding to those of the washer 11. A'second leather washer 11 is fixed behind the disk 13 and is formed with two horizontal slots 15 the ends of which correspond in position with the four holes in the disk 13.

To the back of the leather disk 14 is fixed a rear metal disk 1G formed with twoholes 17 placed at right angles to the holes f in front Vdisk The said holes and slots in the disks and washers serve as passages for the water fed to the valve, all the disks and washers being fixed with the exception of the 'disk' 9 which is fixed to the axis 2. u is the water supply pipe to the said valve fitted with a cock u and applied to one of the holes in the front disk e is the supply pipe-from the valve-to the top of the cylinder e, and fu is the supply pipe to the bottom of the cylinder, the pipes u and v being applied to the holes 1T in the rear disk 1. yw is the exhaust pipe from the valve applied to one of the holes in the front disk lw being the waste water pipe.

ln operation the cock u is turned on thus feeding the supply of water from the pressure main through the pipe u to the rotating valve, Figs. a to G, by the corresponding hole and slot 1. 'lhe water from the latter passes through one of the holes and through the opposite hole in the washer 1 to the corresponding hole 1" in the adjustable disk 9 from whence it passes through the corresponding hole 12 in the washer 11 and disk 13 into the lower horizontal slot 111 in the disk 1*1. From the slot 1 the water then passes through the lower hole 11 in the rear disk 1" to the pipe fu and into the lower end of the cylinder e. The piston d is thus forced upward drawing with it the bell Z) and causing the air to be drawn through the pipe /t and valve /L for filling the bell. rl`he air from the latter is forced Ion lowering the bell by the pipe e' through -the valve j and pipe s to the storage tank It,

from whence it passes through the pipe s1 and cock to the bottoni of the carbureter 1 by the pipe S4. rlhe air then rises through the packing r11 and openings r1 on opposite sides of each disk 1" thus causing it to take a zig-zag course so as to be thoroughly saturated with the spirit held by the said packing. The gas so formed escapes by the opening frs and passes from thence through the pipe fr to the burners.

As the bell b rises the rod y, Fig. 7, carried by the same, also rises until a beveled projection y thereon acts upon a spring catch y1, Figs. 7 and 8, pivoted to the frame so as to disengage the said catch from a notch A formed on the rod A whose lower end is provided with a piston A2 working in a tube' B. Nithin the latter is placed a spiral spring B below the piston and a spring B2 above the latter, thus the lifting of the bell causes the compression of the spring B which as the catch y2 is disengaged from the notch A forces the rod A upward and turns the lever C, connected to the axis of the rotating valve, into the position shown in Fig. l where it is held by the notch A3 engaging with the catch. This actuates the disk 9 of the valve so as to feed the water to the upper end of the cylinder e by bringing one of the holes 10 opposite the upper slot 15. As the bell Z) and the rod y descend by the pressure of the water on the piston d the upper projection y on the rod y pushes the catch 1/1 out of gear with the notch A thus permitting the rod A to descend by the action of the spring B2 on the piston A2 and drawing down the lever C so as to actuate the disk 9 for feeding the water to the lower end of the cylinder e, the catch holding the rod down by its engagement with the upper notch A until the rod y again rises so as to unlock the catch and cause it to engage with the lower notch A3 of the rod A thereby holding the latter in its raised position. By this means the rotating valve is automatically operated for causing the water supply to flow through one or the other of the set of holes and slots formed therein to the top or bottom of the cylinder e thus elfecting the reversing of the said valve. It will thus be seen that the movement of the lever C oscillates the disk t of the valve so as to place the supply pipe u and exhaust pipe w alternately in communication with the pipes o and o. As the pressure of air in the storage tank 7c raises the bell la the projection k2 on the latter bears against and lifts a weighted lever 7c3 for causing the same to close the valve ist thus shutting olf the supply of water until the bell again descends when the lever will fall and open the valve.

Should the burners show any tendency to smoke fresh air may be fed to them from the tank 7c by opening a cock I), Fig. 2, in the pipe r9 leading to the burners.-

Having now fully described the nature of my said invention', what I claim and desire to secure by Letters Patent is z* l In air pumping mechanism, the combi nation of an air bell, an air drum in which the air bell works, an air storage tank connected to said drum, a cylinder, a piston working in the same, a rod connecting said piston to and actuating the air bell, Xed metal disks formed with holes and slots, fixed leather washers formed with similar holes and slots for the passage of the water through pipes to and' from each end of the cylinder, a rotating metal disk having two holes formed in the same communicating with the holes and slots in the said disks and Washers, a central spindle upon which the rotating disk is mounted, the said disks, washers and spindle forming a valve for feeding water to and permitting of its escape from the cylinder, a lever mounted on said spindle, a rod connected to said lever, a piston connected to said rod, a tube carried by the air bell and in which the piston works, springs acting upon each side of the piston, a rod carried by the air bell and a spring catch pivoted to a frame above the air bell and upon which the said rod acts for permitting of the upward and down- Ward movement of the rod connected to the lever mounted on the spindle of the valve disk for causing the rotation of the latter, substantially as described.

In Witness whereof I have hereunto set my hand in the presence of two witnesses.

HORACE I-IARSANT.

Witnesses:

FREDERICK MICAH MELLOR, H. D. JAMESON. 

